💧 Dive into Clarity with Every Test! Manufactured by Hach, a trusted name in water testing. Accurate readings from 0-600 mg/L of free chlorine. Eco-friendly and hassle-free operation. Lightweight and compact for on-the-go testing. Easy-to-use test strips for quick results. Compact size (16.64x7.11x5.46 cm) Lightweight (47.6g) Made in USA The HACHCompany Hach 2890200 Aquachek Free Chlorine Test Strip offers precise and reliable testing for free chlorine levels in water, making it an essential tool for pool maintenance and water quality assurance. With a compact design and no batteries required, it's perfect for professionals who value efficiency and accuracy.